Annual contribution limits are set by the IRS and change each year

The amount you can contribute to a Health Savings Account depends on the type of health insurance coverage you have and whether you're covering yourself alone or your family. For 2024, the IRS limit is $4,150 for individual coverage and $8,300 for family coverage. These numbers increase most years to account for inflation, so you'll want to check the current limit before you contribute.

Your employer may also set a lower limit on what they'll match or allow you to contribute through payroll deduction. Even if the IRS allows $4,150, your company plan might cap employer contributions at a different amount. You can always contribute more from your own pocket up to the IRS limit, but you won't get the employer match on the overage.

The contribution limit applies to the calendar year, not your plan year. If your health plan runs on a different schedule, you still follow the calendar year for HSA contributions. This matters if you're switching plans mid-year or starting an HSA partway through January.

Key Takeaways

  • The IRS sets annual HSA contribution limits that vary by coverage type—$4,150 for individual and $8,300 for family coverage in 2024, with amounts changing yearly.
  • Your employer may set a lower contribution limit than the IRS allows, even if you're willing to contribute more from your own money.
  • Contributions made through payroll deduction reduce your taxable income, while contributions you make directly to the account do not unless you file Form 8889 with your taxes.
  • If you turn 55 during the year, you can contribute an additional $1,000 catch-up amount for that same calendar year.
  • Exceeding the annual limit triggers a 6% excise tax on the overage each year it remains in the account, so tracking contributions matters.

How payroll contributions and personal contributions work differently

If you contribute through your employer's payroll system, the money comes out before taxes are calculated. This reduces both your federal income tax and your Social Security and Medicare taxes. You don't have to do anything extra at tax time—the contribution is already handled.

If you contribute money directly from your bank account to your HSA, you need to claim that deduction on your tax return using Form 8889. Without this form, the IRS won't know you made the contribution and won't reduce your taxable income. Many people miss this step and lose the tax benefit of their personal contributions.

The total of all contributions—whether through payroll or direct deposit—cannot exceed the annual limit. If your employer contributes $2,000 and you contribute $2,000 from your own account, you've hit the $4,150 individual limit and cannot contribute more that year.

Catch-up contributions if you're 55 or older

Once you turn 55, you can contribute an extra $1,000 per year to your HSA on top of the regular limit. This is called a catch-up contribution and works similarly to catch-up contributions for 401(k)s and IRAs. If you turn 55 in June, you can make the catch-up contribution for the rest of that calendar year.

The catch-up contribution is separate from the regular limit. In 2024, a 55-year-old with individual coverage can contribute up to $5,150 total ($4,150 regular plus $1,000 catch-up). You can continue making catch-up contributions every year you're 55 or older, as long as you remain enrolled in an HSA-may be able to access health plan.

If your employer offers catch-up contributions through payroll, you can elect them the same way you elect regular contributions. If not, you can make the catch-up contribution directly to your HSA account and claim it on Form 8889.

What happens if you contribute too much

Exceeding the annual limit triggers a 6% excise tax on the excess amount. This tax applies each year the overage sits in the account. If you accidentally contributed $500 too much and don't fix it, you'll owe 6% of $500 ($30) in tax that year. If the money stays in the account the next year, you'll owe another 6% tax.

To fix an overage, you can request a distribution of excess contributions from your HSA custodian (the bank or financial institution holding the account). You'll need to act before the tax filing deadline for that year, usually April 15. The distribution itself isn't taxed, but any earnings on the excess amount are taxed as income and subject to a 20% penalty.

This is why tracking contributions matters, especially if you have both an employer contribution and a personal contribution. Some HSA custodians send year-end statements showing total contributions, but not all do. Keeping your own record prevents surprises at tax time.

Contribution limits when you change jobs or coverage mid-year

If you leave a job mid-year, your HSA contribution limit for that year is reduced based on how many months you were enrolled in an HSA-may be able to access plan. The IRS uses a monthly proration method: divide the annual limit by 12 and multiply by the number of months you were covered. If you were covered for 6 months with individual coverage in 2024, your limit would be roughly $2,075 ($4,150 ÷ 12 × 6).

This applies whether you leave your job, switch to a non-HSA-may be able to access plan, or enroll in Medicare. If you've already contributed more than your prorated limit through your old employer, you'll need to request a distribution of the excess before tax time.

If you enroll in a new HSA-may be able to access plan partway through the year, you can contribute up to the prorated limit for the months you're covered under that new plan. You're not limited to one HSA per year, but your total contributions across all accounts cannot exceed the annual limit.

How to track your contributions throughout the year

Your HSA custodian should provide statements showing contributions made through their system, but employer contributions sometimes appear on your pay stub instead. To avoid overage mistakes, keep a running total of contributions from all sources: employer payroll contributions, employer lump-sum contributions, and any direct contributions you make yourself.

If you have multiple jobs or switch employers during the year, each employer may contribute to an HSA on your behalf. You're responsible for tracking the combined total. Some people open a new HSA with a new employer instead of rolling the old one over, which can make tracking harder. Consolidating into one HSA account simplifies the math.

Before you make a large personal contribution late in the year, contact your HSA custodian and ask for a current contribution total. This takes five minutes and prevents an expensive mistake.

Frequently Asked Questions

Can I contribute to an HSA if I'm also enrolled in Medicare?

No. Once you enroll in Medicare Part A or Part B, you're no longer may be able to access to contribute to an HSA, even if you have an HSA-may be able to access plan through your employer. You can still withdraw money from an existing HSA without penalty for any reason, but contributions stop. If you enroll in Medicare mid-year, your contribution limit for that year is prorated to the month before Medicare starts.

What if my employer contributes more than I expected?

Contact your employer's benefits department and ask for a breakdown of contributions made on your behalf. If the total exceeds the annual limit, you can request a distribution of excess contributions from your HSA custodian. You'll need documentation from your employer showing the overage amount. Act before the tax filing deadline to avoid the 6% excise tax.

Can I contribute to an HSA and a Dependent Care FSA in the same year?

Yes. HSA contribution limits don't restrict you from also using a Dependent Care FSA. However, you cannot use an HSA to pay for dependent care expenses—that's what the Dependent Care FSA is for. The two accounts serve different purposes and have separate contribution limits.

Do unused contributions roll over to the next year?

Yes. Unlike Flexible Spending Accounts (FSAs), HSA funds carry over indefinitely. There's no "use it or lose it" rule. Money you don't spend in 2024 stays in your account and can be used in 2025 or any year after. This is one reason HSAs are valuable—they function as long-term savings accounts for medical expenses.

What if I'm covered under two HSA-may be able to access plans at the same time?

Your total contributions across all HSA accounts cannot exceed the annual limit for your coverage type. If you're covered under two individual plans, you still can't contribute more than $4,150 total in 2024. You're responsible for tracking contributions across multiple accounts. This situation is rare but can happen if you have coverage through both a spouse's employer and your own.